CN105993045B - Record method, equipment, optical data memory system and the recording medium of data - Google Patents

Record method, equipment, optical data memory system and the recording medium of data Download PDF

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Publication number
CN105993045B
CN105993045B CN201380081891.1A CN201380081891A CN105993045B CN 105993045 B CN105993045 B CN 105993045B CN 201380081891 A CN201380081891 A CN 201380081891A CN 105993045 B CN105993045 B CN 105993045B
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China
Prior art keywords
radiation
optical
recording medium
characteristic
recording
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CN105993045A (en
Inventor
顾敏
李向平
曹耀宇
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Shanghai Naguang Information Technology Corp
Swinburn Venture Capital Co.,Ltd.
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Swinburne University of Technology
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1263—Power control during transducing, e.g. by monitoring
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/128—Modulators
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24044—Recording layers for storing optical interference patterns, e.g. holograms; for storing data in three dimensions, e.g. volume storage
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G11B2007/00457—Two photon recording

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Head (AREA)

Abstract

Record method, equipment, optical data memory system and the recording medium of data.The recording medium includes the optically active material of the change of properties of induction medium when there is the optical radiation with the first characteristic, and change of properties is inhibited by the optical radiation with the second characteristic.During record, the region of recording medium uses the first beam optics with the first characteristic to radiate irradiation, the sufficient intensity of optical induction variation of the beam with the property for causing recording medium in the central part of institute's irradiation area and enough duration.Simultaneously, with the region of the second beam optics radiation irradiation recording medium with the second characteristic, second beam has local strength's minimum value in the central part of institute's irradiation area, and has the local intensity maxima of the optical induction variation for the property for being enough to inhibit recording medium at least part of the neighbouring central part in institute's irradiation area.Similar approach reduces the intensity of the first beam for obtaining to prevent the variation of the material properties in recording medium.

Description

Record method, equipment, optical data memory system and the recording medium of data
Technical field
The present invention relates to recorded and obtained using light field (for example, laser) based on the physical property using suitable recording medium Take the data-storage system of the type of (retrieve) information.The present invention relates more particularly to be suitable in large-scale data center etc. The storage system with very high density used.
Background technique
Optic storage medium is that storing data allows to for example by being integrated in sound pick-up in a manner of optical readable (pickup) laser and photodetector in read the media of data.Contemporary business optic storage medium includes single layer and double Layer DVD and Blu-ray Disc, wherein record and playback are based on control or detect to return from the reflecting layer in medium (that is, CD) Light.In these single layers and DVD-dual layer and Blu-ray Disc, the maximum data memory capacity is realized by double-layer blue ray disc, Double-layer blue ray disc may include the information of up to about 50 gigabytes.However, for example in very big data center Emerging apply will require even higher density to store in future, to minimize the required physical space of data storage and be used for Safeguard and operate the energy requirement of this data center.
A kind of technology for increasing storage density is all three dimensions using storage medium (that is, by medium Additional data is stored at inherent different depth).DVD-dual layer and Blu-ray Disc are the example of the technology, and allow data two Separate storage in a discrete recording layer, two discrete recording layers are laminated in disc structure and by adjusting laser beam foucing It is accessed.It can be integrated to the quantity of the discontinuity layer in recording medium in this way by physical characteristic (for example, weight and thickness Degree) limitation, and the packing density in depth dimension is also limited by the physics spacing of layer.
Second of technology for increasing storage density is to improve the optical resolution of storage system.By convention, optics The diffraction property limitation of the resolution ratio light of data storage.Higher density can be by increasing the numerical aperture of optical device or subtracting Wavelength (that is, increasing frequency) Lai Shixian of the small light source for being written/reading.However, under any circumstance, it is difficult to which formation is less than The record characteristic size of a half-wavelength of beam is written, or is difficult to detect the feature for being less than the half-wavelength for reading beam on the contrary.
Recently, it has developed and has been cut using the pupil function at the particular polarization state of write-in beam or the back aperture of object lens The far field super-resolution rate recording method of toe (apodise).However, these methods can not achieve 50 nanometers of resolution ratio below.Separately Outside, substantially very slow using the position journal of these methods, and therefore, limit data throughout.
Therefore, for high optical resolution that the most desired characteristic of super high density optical data storage is for recording and reproducing Rate is (using the ability of all three dimensions of blocky recording medium (that is, not needing to be laminated individually discrete record by different materials Layer)) and high data throughput.In the presence of to the improvement method of optical data storage that can realize superior function across these key criterias With being continuously needed for system.
Summary of the invention
In an aspect, the present invention provides a kind of method of recording optically readable data, the method is used and is mentioned The recording medium of confession, the recording medium include can have the property that the medium is induced when the optical radiation with the first characteristic The optically active material of qualitative change, and wherein, the change of properties can be inhibited by the optical radiation with the second characteristic, The described method includes:
The region of the recording medium is irradiated with the first beam optics radiation with first characteristic, the beam is being shone It penetrates in the central part in region the sufficient intensity of the optical induction variation with the property for causing the recording medium and holds enough The continuous time；And
The region of the recording medium, institute are irradiated with the second beam optics radiation with second characteristic simultaneously State the second beam has local strength's minimum value in the central part of institute's irradiation area, and in the neighbouring of institute's irradiation area There is the part of the optical induction variation for the property for being enough to inhibit the recording medium at least part of central part Maximum of intensity.
Embodiments of the present invention are advantageously able to by inhibiting by the second beam optics spoke around the center spot of the first beam The change of properties for the recording medium penetrated in the region of restriction achieves over the enhancing resolution ratio of usual diffraction limit.The result is that table Show the change of properties in the recording medium of stored information state, which is less than will be in the diffraction limit of only the first beam Locate the change of properties realized, that is, the result is that higher resolution.
In another aspect, the present invention provides a kind of sides for optically reading the data of storage in the recording medium Method, recording medium include the medium corresponding with recorded data change of properties in one or more regions by The optically active material of induction, wherein change of properties can via the medium to the first characteristic optical radiation response It detects, and wherein, the response of the medium can be inhibited by the optical radiation with second characteristic, the method Include:
The region of the recording medium is irradiated with the first beam optics radiation with first characteristic, first beam exists There is the sufficient intensity for causing the response and enough duration in the central part of institute's irradiation area, but do not have and cause The sufficient intensity of the optical induction variation of the property of the recording medium and duration；
The region of the recording medium, institute are irradiated with the second beam optics radiation with second characteristic simultaneously State the second beam has local strength's minimum value in the central part of institute's irradiation area, and in the neighbouring of institute's irradiation area There is the response for being enough that the medium is inhibited to radiate first beam optics at least part of the central part Local intensity maxima；And
Detect whether the medium is presented in the central part of institute's irradiation area to first beam optics radiation The response.
Identical as record aspect of the invention, the embodiment for reading aspect can be by inhibiting to radiate in the first beam optics Center spot realize higher resolution close to the mechanism of the material response in the region of surrounding.
In some embodiments, the first characteristic and the second characteristic include different optical frequencies.In other embodiments, First characteristic and the second characteristic include different polarization state.In further embodiment also, the first characteristic and the second spy Property includes different optical pulse widths.
In embodiments of the present invention, the first beam optics radiation has gaussian-shape intensity distribution.It such as will be by optical field In technical staff understand, the Gauss pencil of forms have diffraction limited spatial resolution.Thus, for example, if the first electron gun has certainly There is the light source of 800 nano wave lengths, then will it is expected about 400 nanometers of maximum resolution.
In some embodiments, the second beam has annular intensity distribution.Annular intensity distribution can for example pass through focusing Circular polarization beam with Laguerre-Gaussian modes or the angular polarization beam for generating " baked donut " shape obtain.
Advantageously, pass through the suitable control of the space overlapping and their relative intensity of the first beam and the second beam, it is contemplated that The resolution ratio of optical storage can be improved to 50 nanometers or less.
In some embodiments, the second beam is formed to provide three-dimensional hollow intensity distribution.This can for example pass through tool There are the circular polarized beams (or vertex phase with topological charge) of Laguerre-Gaussian modes and there is concentric π phase at the center of beam The combination of the circular polarized beams of shifting is realized to form hollow shape.Hollow cage type can have with one heart by the center for focusing on beam The circular polarized beams of π phase shift generate.
Advantageously, the three-dimensional hollow intensity distribution of the second beam can be used for the three-dimensional around the gonglion of the first beam Response during inhibiting the change of properties of address period in space or inhibiting to read.This makes it possible to do not needing to form physics point In the case where layer interrecord structure with the comparable resolution ratio along all dimensions in all three dimensions of blocky recording materials Record information state.
First beam and the second beam can be generated from pulse or continuous wave (CW) light source.
In some embodiments, the first beam and the second beam include multiple parallel beams.For example, the pupil function of beam can be by It is designed as creating multifocal array in focal plane.Multifocal array with gaussian-shape focal spot corresponding with the first beam with have and the Two beams are corresponding hollow or the superposition of the multifocal array of annular focal spot advantageously enables to be carried out with increased rate of data signalling Parallel record/reproduction.
In some embodiments, the polarization state of the first beam and the second beam is arranged and is superimposed any desired to create Three-dimensional polarization orientation.Advantageously, this makes it possible at the same spatial location in recording medium in the polarization shape of write-in beam Multiple information states are encoded under state.
In the embodiment in terms of reading of the invention, the material response of property is Reflection Optical Thin Film spoke after instruction variation Penetrate/phosphorescence.It is thus possible to detected by using photodetector dielectric response in the first beam and the second beam application whether Transmitting radiation is to read recorded information state.
In another aspect, the present invention provides a kind of optical data recording and reproduction equipment, the optical data recording and Reproduction equipment includes:
Bracket, the bracket are configured to medium of holding the record, which includes optically active material, and the optics is living Property material can exist have the first characteristic optical radiation when induce the change of properties of the medium and generate instruction institute The material response of property after variation is stated, and wherein, the response of property can be by after the change of properties and instruction variation Optical radiation with the second characteristic inhibits；
First light source, which is configured to control, and there is the transmitting of first characteristic to radiate；
First imaging system, first imaging system are configured to the first beam optics spoke for making to emit from the first light source It penetrates on the region for controllably focusing on the recording medium, wherein central part of the optical radiation in first beam It is interior that there is maximum intensity；
Second light source, the second light source are configured to controllably emit the radiation with second characteristic；
Second imaging system, second imaging system are configured to the second beam optics spoke for making to emit from the second light source It penetrates on the region for controllably focusing on the recording medium, wherein the optical radiation is at the center of second beam There is local strength's minimum value in part, and there is office at least part of the neighbouring the center portion thereof of second beam point Portion's maximum of intensity；And
Controller, the controller are configured at least described first light source of control, first imaging system, described second Light source and second imaging system, with the optical radiation of the intensity selected by first emitted from the first light source and use The recording medium kept in the bracket is irradiated in the optical radiation of intensity selected by second emitted from the second light source simultaneously Data are selectively recorded the recording medium or selectively read data from the recording medium by selected areas.
In some embodiments, at least the first imaging system includes modulator, and the modulator is controllable to selectivity Ground stops the first beam to irradiate recording medium.Advantageously, modulator can be controlled as determining in medium whether record information state Variation and/or whether read any information state stored in medium.
In embodiments of the present invention, the controller is configured to control the intensity of at least described first light beam, with It is selected between the write-in and read operation of the note recording and reproducing apparatus.For example, high intensity can be used for being written relatively Operation, and can be used for read operation compared with low-intensity.
In some embodiments, recording medium includes disk, and bracket includes being configured to firm installation disk Mandrel, the mandrel by the motor activated with controlled speed enable to control disk angular speed.First imaging System and the second imaging system can also be constructed such that enough for example by the optics of focal spot and/or machinery positioning come radial Translate the selected areas of recording medium.In some embodiments, disk record medium includes the detectable tracking being arranged radially Element (such as reflecting element, hardware or magnetic cell), to provide the closed loop feedback of imaging system during translation or tracking Mechanism.Particularly, in some embodiments, which includes being connected at least one tracking element biography of controller server Sensor, controller server are configured to the radial position for keeping imaging system relative to disk.
In some embodiments, the first imaging system and the second imaging system are configured to generate multiple collimated light beams. Moreover, in some embodiments, the first imaging system and the second imaging system include that be positioned such that can be selective Ground forms the spatial modulator of multiple collimated light beams.
In some embodiments, bracket and/or imaging system are configured such that the selected areas of recording medium can At the controllable depth in recording medium.For example, the focal spot of the first beam and the second beam can be fixed via optical alignment and machinery One or both in position is controllably located at any position in recording medium.
In some embodiments, the material response of property is broadband optical radiation/phosphorescence after instruction variation, and The equipment further includes photodetector, the photodetector be configured to by first beam and second beam to the note The presence of the emitted radiation/phosphorescence of detection during and/or after recording medium is irradiated.
In another aspect, the present invention provides a kind of optical data memory system, the optical data memory system packets It includes:
Implement multiple optical data recordings and reproduction equipment of the invention；
Multiple record medias, multiple record media is associated with each optical data recording and reproduction equipment, Mei Geji Recording medium can be selectively loaded into the bracket of associated optical data recording and reproduction equipment；And
Storage control, the storage control are configured to receive for recording and obtaining the data in the storage system Request, identification complete received request require the system in record media so that required record media quilt It is loaded into each associated optical data recording and reproduction equipment, and associated optical data recording and reproduction are set The standby record operation and/or acquisition operation completed for completing received request requirement.
In another aspect, the present invention provides a kind of recording mediums including multilayer, wherein at least one layer includes outer guarantor Sheath, and at least one other layer includes can have the property that the medium is induced when the optical radiation with the first characteristic Qualitative change and the optically active material for generating the material response of property after instruction variation, and wherein, the change of properties and Indicate that the response of property after changing can be inhibited by the optical radiation with the second characteristic.
In some embodiments, recording medium includes disk.
Further, recording medium may include at least two protections being arranged on the opposing face of optically active material Layer.
According to one embodiment, the optically active material include transformation can be by the optics with first characteristic The first radiation-induced excited state, and wherein, the change of properties of the recording medium when in described first by swashing The absorption of optical radiation with first characteristic when hair-like state generates.Therefore, in such an embodiment, optical activity Material can desirably have big non-linear absorption coefficient.
In addition, in embodiments of the present invention, the presence of the optical radiation with second characteristic is induced from described The fast transition of first excited state, to inhibit the change of properties of the medium.
Embodiments of the present invention can use optically active material, and the optically active material includes containing vinyl； Phenyl；Or the organic conjugated molecule with abundant delocalized electron in the conjugated system of carbonyl.For being passed through from the first excited state By absorbing optical physics/chemical reaction of induction, it includes base (such as amide groups that embodiments of the present invention, which use,；Carbonyl；Ester group； Or amido) optically active material.
In embodiments of the present invention, the material response of property is by the first excited state to base after instruction variation Broadband optical radiation/phosphorescence that the decaying of state is realized, in this case, material, which is advantageously presented, has a considerable amount of sub- yield The photoluminescent process of (for example, the quantum yield for being greater than 10%).Suitable material in embodiments of the present invention includes having For those of the big conjugated pi track material of the work molecule in recording medium, to enhance the movement that the second beam inhibits the first beam Function and increase photon induced transition rate from the second excited state to ground state.Molecule for embodiments of the present invention is waited Choosing includes: cumarin and its derivative；Thioxanthones and its derivative；Ketone and its derivative；Cyclopentanone (cyclopentanome) and its derivative；Or rhodamine and its derivative.
In some embodiments, the thickness of the optically active material layer is enough to allow multiple information storage interior layers.
In some embodiments, recording medium includes the tracking layer with the detectable tracking element being arranged radially.It closes Suitable tracking element includes one of the following or more: magnetic tracks element；Optical tracking element；Metal tracks element；And Physics tracks element (such as recess or slot).
Further characteristic of the invention, benefit and application are by clear, the example from being described below for illustrative embodiments Property embodiment be provided to give being more fully understood for the property of technical staff's embodiments of the present invention and operation, but do not answer Be considered scope of the invention is limited to it is any one of set forth above described in or appended claims defined in this hair Bright range.
Detailed description of the invention
Embodiments of the present invention are now described with reference to the drawings, in the accompanying drawings, same reference numerals refer to same characteristic features, And wherein:
Fig. 1, which is shown, implements disc-like recording medium of the invention；
Fig. 2 shows the energy diagrams for optically active material, show record according to embodiment of the present invention Operation and read operation；
Fig. 3 shows the energy diagram for optionally optically active material, shows according to embodiment of the present invention Record operation and read operation；
Fig. 4 is the view for schematically showing the beam and focal spot form that implement the first light beam and the second light beam of the invention Figure；
Fig. 5 is specific implementation optical data recording of the invention and the block diagram for reading equipment；
Fig. 6 is the exemplary record/reading control algolithm flow chart realized by the controller of Fig. 5；
Fig. 7 is to show the view of the structure for recording and reading parallel of embodiment according to the present invention；
Fig. 8 is to show the specific implementation chart for inhibiting the relationship between beam power and characteristic size of the invention；
Fig. 9 shows the scanning for being compared single beam recording and two-beam record according to embodiment of the present invention Electron microscope (SEM) image；And
Figure 10 is to show the block diagram for implementing the optical storage array system including optical drive of the invention.
Specific embodiment
As shown in Figure 1, implementing disc-like recording medium 100 of the invention includes multiple layers, such as 102 institute of cross section Show.Disk 100 has in a usual manner for accommodating the centre bore for making the mandrel of disc rotary.Up-protective layer 104 includes With the wear-resisting substrate with the matched refractive index of one or more recording layers 108, one or more recording layer 108 is wrapped Include can exist have the first characteristic optical radiation when induction medium change of properties and generate instruction variation after property Material response optically active material, and wherein, the response of property can be by having the after change of properties and instruction variation The optical radiations of two characteristics inhibits.
Be this description particular implementation in, such as in greater detail referring to Fig. 2 and Fig. 3, the first characteristic with Second characteristic is optical frequency (that is, photon energy).
Lower protective layer 106 is also provided.
In the construction shown in, combined first laser beam and second laser beam 110 irradiate disk 100 from top.Upper guarantor Sheath 104 is transparent to the two beams.In operation, (referring specifically to Fig. 4) as described in more detail below, beam is focused on On region in recording layer 108.It, can be in recording layer 108 by way of suitably controlling the first beam and the second beam and intensity Interior induction change of properties, to be encoded to the information stored.After the information stored can also have variation by detection The region of property is read by the suitable control of the parameter of two-beam 110 again.
Recording layer 108 may include the label 112 being arranged in disk 100 with radial spacing.Label can have so that Property can be can detect along the optics of the position of radial tracking laser beam 110 by reading and writing equipment.In addition, exemplary disk 100 include the magnetic tracking layer 114 being made of the accurate positionin concentric ring of magnetic material, and concentric ring can be detected by magnetic probe 116, Thus servo-system can be used to correct for the drift and/or movement of disk during operation.
Fig. 2 shows specific implementation it is of the invention be suitable for used in the recording layer 108 of media optically active material Energy diagram.Material can possess specific physically and/or chemically characteristic, allow change of properties by the optics with the first characteristic To induce, and wherein, change of properties can be inhibited by the optical radiation with the second characteristic for radiation.Energy shown in Fig. 2 Grade figure indicates exemplary materials, wherein the first characteristic is the first optical frequency (or photon energy), and the second characteristic is not share the same light It learns frequency (or photon energy).
The sample of material is initially indicated by energy diagram 200.Molecule in material has the first ground state 202 and the first excitation State 204, the transformation from ground state 202 to excitation state 204 are induced in the light field there are sufficient intensity, and have and excitation state The corresponding optical frequency of energy difference between 204 and ground state 202.
Molecule in material is with second ground state 206 relative to excitation state 204 with corresponding second energy difference.There is foot Second light field of enough intensity and have between excitation state 204 and ground state 206 can poor corresponding frequency when, will induction from excitation State 204 will then decay to the first ground state 202 to the fast transition of ground state 206.
Therefore, when there are the second light field (also known as " suppressed field "), the not change of properties of generating material.However, depositing At the first light field (also known as " the record field ") of sufficient intensity, and there is no when suppressed field, molecule can be in the long period Excitation state 204 is maintained in section.In the state, the further of the photon from record field absorbs the light object that may cause material Reason/chemical change causes the variation of the characteristic energy level of material.The exemplary energy level of material after changing is shown in Figure 20 8.
Optical modifier material has new first ground state 210 and new correspondence excitation state 212, the new correspondence excitation state 212 have energy corresponding with the first light field frequency poor.New second ground state 214 is present in and inhibition field frequency lower than new excitation state 212 The energy level of the corresponding amount of rate.Therefore, when there are suppressed field, excitation state 212 is short-life.However, suppressed field is not present When, excitation state is the long-life, and can be presented in the ground state 210 that decays back, ground state 214 or another more low-lying level photic It shines.It can detecte obtained luminescence generated by light, to identify the presence of modified material.
Therefore, as it will be appreciated, the first light field with the first optical frequency can be used for induced material variation, the material Variation can be then identified again by material to be exposed in the first light field.However, the property becomes when there are suppressed field Change can be suppressed.By the intensity ratio between two fields of control, the conversion between two materials behaviors can control, so as to For being encoded in recording layer 108 to information.
In order to keep above-mentioned mechanism effective, optically active material can have following property.First, it, which may include, has greatly The molecule of absorption coefficient.For example, big non-linear absorption coefficient can be expected for and record in all three dimensions, enable to It carries out from ground state 202 to the transformation of excitation state 204.The example of suitable material includes in being total to comprising vinyl, phenyl or carbonyl The organic conjugated molecule with abundant delocalized electron in yoke system.
Second, material can induce optical physics/chemical reaction according to excitation state 204.For example, organic molecule may include one A little active groups (such as amide groups, carbonyl, ester group or amido).
Third, the ground state 202 or ground state 206 that excitation state 204 can decay to are (such as glimmering with photoluminescent process Light), there can be sufficient quantum for this purpose, for example, being greater than 10.At this point, can require for record The big conjugated pi track of work molecule in medium, to enhance the function of suppressed field, and increases from excitation state 212 to ground state 202 Photon induced transition rate.In order to meet these criterion, molecule candidate includes cumarin and its derivative, thioxanthones and its derivative Object, ketone and its derivative, cyclopentanone and its derivative or rhodamine and its derivative.
Fig. 3 shows the energy diagram for implementing alternative optically active material of the invention.Material include by can Figure 30 0, The 302 two kinds of molecules indicated, one kind is initiator, and another is inhibitor.When there is record field, initiator Molecule can be converted to excitation state 306 from ground state 304, and then decay to triplet 308.In addition, when there are suppressed field, Inhibitor molecules can be converted to excitation state 312 from ground state 310, and decay to triplet 314.
When there is no the inhibitor molecules in triplet 314, for the inhibitor molecules for being in triplet 308, light The further of son absorbs the optical physics/chemical change that may cause material, causes to include ground state 318, excitation state 320 and second The amendment energy level of ground state 322, as shown in energy level Figure 31 6.It will be noted that the detection of the modified material with energy level 316 can be with It is executed in a manner of identical with the modified material with energy level 208 shown in Fig. 2.
When inhibitor molecules are excited to triplet 314, inhibitor molecules, which can be formed, will prevent the property of material from turning The chemically reactive species (such as free radical) of change.For example, excitation after inhibitor can by living radical generate process come Cause to polymerize or depolymerize, to be transmitted.In order to obtain enough inhibition efficiency, inhibitor can have to be produced for high quantum The triplet of the reaction species of rate.Moreover, reaction species can only be reacted with the inhibitor of the energy level in triplet 314, and And its product can be generated from the energy level of triplet 314.
In order to meet all above-mentioned criterion, initiator for example can be ketone and its derivative or cyclopentanone and its derivative Object, and inhibitor can be disulphide and its derivative.
Fig. 4 be schematically show specific implementation of the invention first (that is, record or read) light beam and second (that is, Inhibit) beam of light beam and the view of focal spot form.First beam 402 is combined using beam splitter 406 with the second beam 404, and is combined Beam is focused via imaging system 408.Therefore, two beams are focused on the recording layer of recording medium (such as disk 100) simultaneously On selected areas in 108.
As shown in the first row 410 of the table in Fig. 4, the first beam has maximum of intensity in central part, and And the focal spot of substantially oblate spheroid form is generated in the example shown.
As shown in the column 412 of the table in Fig. 4, the second beam can be formed have local strength in central area Minimum value, and there is general toroidal intensity profile around the region.Alternatively, as shown in column 414, the second beam can be by Be formed as generating general hollow intensity distribution in three dimensions around focal zone.In general, the desired characteristic of the second beam be There is local strength's minimum value in the central part of institute's irradiation area, and the neighbouring central part of institute's irradiation area at least There is local intensity maxima in a part.
Therefore, the application of selected areas of the first beam to recording medium can cause the record of the material properties near focal spot Or it reads.Such as the presence of the suppressed field of annular or three-dimensional hollow area format is by causing the correlated process in peripheral region Inhibit to limit record or read the volume occurred on it.Therefore, generally speaking, the two-beam of embodiment according to the present invention Operation can cause the raising resolution ratio for recording and reading, therefore can cause the density of data storage dramatically increased.
The form of first beam 402 can be the normal Gaussian profile with diffraction limited spatial resolution.Second beam 404 Ring form can be obtained by focusing the circular polarization beam with Laguerre-Gaussian modes or angle of orientation polarisation beam, to produce Raw " baked donut " shape.Hollow form placed in the middle (for example, as shown in column 414) can have Laguerre-Gauss mould by combination The circular polarization beam of formula (or vertex phase with topological charge) and the center of beam have concentric π phase shift circular polarized beams come It is formed.Hollow cage type can have the cylinder-shaped polarisation beam of concentric π phase shift to generate by the center for focusing on beam.
Fig. 5 is specific implementation optical data recording of the invention and the block diagram for reading equipment.This equipment is known as jointly Optical drive or referred to as driver.
Optical drive 500 includes being configured to hold the record the bracket 502 of medium (that is, CD 100).Bracket 502 wraps The mandrel being configured to via the firm installation disk of centre bore is included, which is activated by the motor with controlled speed, Enable to the angular speed of control disk.
Laser source 504 includes the first light source 506 and second across the first imaging system 510 and the second imaging system 512 Light source 508.Imaging system 510,512 is arranged in the above described manner referring to Fig. 4, to generate desired first harness shape and second Harness shape is respectively used to record/reading and inhibition.Reflecting mirror 514 and beam splitter 516 are for combining the first beam and the second beam.So Afterwards, combined beam is focused on by reflecting mirror 518 and lens 519 via the tracking mechanism or optical head indicated in the simple block diagram of Fig. 5 On the selected areas of recording medium 100.Tracing system is at least controllable to move radially relative to disk 100, enables to Selection certain tracks are for recording/reading.
Servo-system 520 is connected to probe 116, and including feedback control loop 100, feedback control loop 100 can be used for foot Enough precision keep expectation rotation and tracking speed, to record to the desired region of disk 100 and read from the desired region of disk 100 It takes.
During read operation, the light emitted from disk 100 in response to the light field applied is via tracking optical device 519, it 518 is returned, and is reflected into detection system 524 from beam splitter 522.Detection system 524 may include photosensitive detector With the demodulator for demodulating read information.Fluorescence bandpass filter (fluorescence pass is used before photosensitive detector Filter) to refuse noise and remaining laser beam.
The component of driver 500 is (that is, laser source 504, servo-system 520, tracing system 518,519 and detection system 524) it is operated under the control of electronic controller 526, which generally includes microprocessor, suitable procedure design And other electronic building bricks for sending and receiving control signal between the component of driver 500.
The further property and parameter of record and playback can be based on existing optical storage techniques (such as DVD and blue light light Disk technology).For example, modulation technique (8 to 16 modulation) can be applied to encode the data being recorded on disk 100.For Constant throughput and constant data density of the confirmation across entire disk media, constant linear speed (CLV) operation for example can be with With the speed of 60m/sec for recording and reading.It is subjected to minimum and reads and writees cycle time, handling capacity can pass through increase CLV is modified.Handling capacity for position record is T=CLV/d, wherein CLV is constant linear speed used in system, and And d is the length (that is, on physics disk 100/in) of single position.
Such as in greater detail referring to Fig. 7, driver can be recorded and be read parallel.It is thus possible to increase record And read throughput.After application is written in parallel to, it is T that overall data, which records handling capacity,drive=p × T, wherein p is to remember parallel The quantity of the position of record.
As shown in Figure 1 and Figure 5, it is used for using magnetic tracking layer 114 and the magnetic servo-system of probe 116 in record and reading The superhigh precision of the escaping (walk-off) of the rotating circular disk of period corrects.Servo-system may include read head, micro-actuator And digital control circuit.The main task of servo-system is detection position error signal and corrects location error.Probe 116 It is operated by micro-actuator, and it is attached to be located at the disc surfaces with magnetic orbital slot (as shown in Figure 1, in tracking layer 114) Closely.The position of head determines by reading the position signal of precoding in track groove, this generate for correct optical head 518, The position error signal of 519 position.Digital control circuit is for controlling micro-actuator, transmitting position signal and making servo system The sampling rate and optical recording and reading system coordination of system.Based on the position signal from servo-system, for driving optical head Actuator can with superhigh precision (for example, 30nm or less) adjustment laser beam relative position.
In alternative embodiment (not shown), optical servo system can be used.Optical servo system includes four-quadrant Photodetector, optics of astigmatism device and difference channel.Such as it is consistently focused on the servo laser device of 658nm wavelength operation In the slot structure formed in disk 100.Then, the servo laser beam reflected is being passed through by a pair of round and cylindrical lens group At optics of astigmatism device after carry disk escaping information.Four-quadrant photodetector can sense the change in shape of reflecting bundle. Four-quadrant photodetector generates four signals (A, B, C and D).The shape of this four signal judgement escapings can be used in difference channel State, mandrel speed, tracking error and focus error signal.RF signal is generated by the way that four signals are added up (A+B+C+D). According to the frequency of RF signal, the speed of mandrel can be determined.Radial convergence error can be surveyed by (A+C-B-D)/(A+B+C+D) Amount, is referred to as focus error signal.Transverse focusing error (tracking error signal) can by (A+B-C-D)/(A+B+C+D) Lai Measurement.Corresponding current will be applied to that the actuator of control optical head, with adjust the object lens 519 of head relative to the axial direction of disk and The relative position of cross track position.
Fig. 6 shows the exemplary record/reading control algolithm simplified flowchart that can be realized in controller 526 600.In the case where write-in or reading, first step is 602 servo-systems of activation and executes 604 detection algorithms, the inspection There is the disk with appropriate tracking label in method of determining and calculating confirmation.If reporting 608 errors there are 606 without disk.
At decision point 610, which operates or records data manipulation according to requests data reading along alternative path It carries out.In the case where reading data 612, controller activates at step 614 reads beam.Controller ensures to read the intensity of beam Grade is enough to generate photoluminescence response, and the strength grade of material properties will be changed by but being below (that is, in case of recording). Controller 526 activates spindle motor also at step 616.In general, during read operation, it is some form of by generating 618 Instruction or other displays, to provide the visual confirmation read for any observer.Controller continues read operation 620, until getting all expectation information from disk 100, at this point, the process completes 622.
In more detail, before reading, controller can execute address searching, to find target zone.In order to search for circle Disk position, controller 526 opens servo-system 520, to find orbital position first.Then, the power of the first beam 506 is reduced / 10th of the power used during record read to avoid destructiveness.Axis is executed by detecting collected fluorescence To scanning, to find target information layer.Once confirming disk position, controller 526 switches to two-beam mode, and makes laser It gates synchronous with disc rotary.Data optical signal detected is converted into corresponding to by the photosensitive detector in detection system 524 Digital electric signal.Electric signal is demodulated by decoder, and is eventually communicated to master device as acquisition data.
In the case of data recording, controller receives first at step 624 by already recorded data.In step 626 Place, to initiate the sufficient intensity activation record beam of the change of properties of recording medium.Also activation 628 inhibits beam.The case where with reading Identical, controller activates spindle motor at step 630.Then, record carries out 632, until completely recorded data input block Until.At step 634, controller determines whether that further data block will be recorded, and if further data block will be recorded, Then control returns to step 624.Otherwise, recording process completes 622.
In order to dramatically increase record and read handling capacity, parallel record is also possible in embodiments of the present invention. The arrangement 700 for recording and reading parallel for being suitable for realizing in driver 500 is shown in Fig. 7.In general, arrangement 700 exists Spatial light modulator is used in beam path in each of first beam and the second beam (that is, record/reading beam and inhibition beam) (SLM).The computer shown on SLM generates phase pattern and be used to generate multifocal array in the recording medium.
Particularly, the first beam 702 and the second beam 704 are directed on the first SLM 706 and the 2nd SLM 708.SLM is shown The phase pattern 710,712 appropriately created, as described in more detail below.SLM 708 can be also used for addition vertex phase wave Preceding 714 or this can be included via independent phase-plate.Beam 702,704 can be continuous wave (CW) or impulse wave, however, In the case where generating a large amount of focal spots, has the advantages that the pulse mode of high peak intensities can be provided and operated more than CW mode.
Reflecting mirror 716 and beam splitter 718 be used to combine the first beam and the second beam, and combined beam passes through collimating optics device Part 720.Object lens 722 be used to focus on light field in recording medium 100.The result is that the array of the focal spot of the first beam and the second beam (schematically shown in such as Fig. 7 724,726).In this way, it is possible to be written or read the corresponding array of data value simultaneously. The independent spot for controlling the write-in of specifying information state can be controlled by the suitable computer of SLM to be opened and closed.
In order to which the computer of the multifocal array phase pattern for controlling SLM generates, in the plane of the electric field in focal plane Comb function can be by application to maintain the high consistency in multifocal array with being superimposed for intensity weighted alternative manner.Sufficiently examine The vector debye diffraction theory for considering apodization reconciliation polarization effect can use in calculating process.Particularly, holography can be executed Iterative algorithm between plane and focal plane, to obtain the multifocal array of diffraction limited with high consistency.This method starts Random initial phase conjecture in the input electric field and hologram plane of uniform planar wavefront.The Deby's integral Debye unit for executing the wavefront becomes It changes, to estimate the output electric field in focal plane.Add by the correspondence peak strength of the pre-position in output plane and as equal The desired peak intensity of comb teeth is compared in power plane.The peak strength error ε of the two is calculated, and further with ideal comb Tooth function replaces the amplitude of the complicated electric field in focal plane.In order to improve the consistency in multifocal array, introducing weighted factor:
Wherein, k is the number of iterations, and m indicates m-th of focal spot in array, and I indicates peak strength.For each After effective weighting of focal spot, inverse transformation is carried out to the electric field newly adapted to and generates corresponding fields in input plane.In input plane Amplitude no longer matched with consistent plane wave front situation, therefore the amplitude of input plane further with consistent amplitude replace.Also, For next iteration, the phase in input plane is kept.This completes an iteration, and the period repeats, until n-th changes Intensity error ε in generation converges within the scope of acceptable tolerance (for example, 0.01).Continuous adaptation phase in input plane is most Multifocal array phase pattern eventually.
The algorithm independently of incident wavefront form, and therefore however, the algorithm depends on the wavelength of laser, two When the light source of a different frequency be used to record, two SLM 706,708 for two-beam can be used.
Although applying x linear polarization in algorithm above, phase calculated is also applicable to can be in SLM phase Any kind of polarization state converted after the modulation of position.Therefore, the polarization state in multifocal array is identical, and is depended on Polarization state in the back aperture plane of object lens.
It has carried out Proof of Concept experiment and has implemented high-resolution two-beam writing-method and equipment of the invention to demonstrate Validity.Fig. 8 and Fig. 9 shows the example results from these experiments.It is used with 800 nanometers of wavelength with 80 megahertzs The pulsed laser source of repetitive rate and the pulse width of 140 femtoseconds generates first (record) beam.With 375 nanometers of wavelength from the source CW Generate second (inhibition) beam.
Fig. 8 is the pass during showing record between the obtained characteristic size generated and the power of second (inhibition) beam The chart 800 of system.Inhibition beam power is shown on horizontal axis 802, while character pair size being shown on the longitudinal axis 804.It is not depositing When inhibiting beam, as shown in data point 806, about 220 nanometers of characteristic size is obtained.Inhibit Shu Gong by 0.3 microwatt Rate, as shown in point 808, characteristic size is reduced to be just below 200 nanometers.When the power of inhibition beam is further increased to When 0.6 microwatt, as shown in point 810, characteristic size is reduced to 120 nanometers or less.This show clearly the notes of beam in pairs Recording method generates the ability of the characteristic size of the diffraction limit lower than record beam.
Fig. 9 shows scanning electron microscope (SEM) image, and single beam recording 902 and two-beam record 904 are compared, Inhibition beam power is 0.3 microwatt.As shown in the first image 902, due to recording the diffraction limit of optical device, have 300 to receive Rice center to center, by individually record beam generation bit array prevent each single spot from being clearly distinguished. However, the center with 200 nanometers can be clearly distinguished in when the inhibition beam of the power with 0.3 microwatt is also effective Single spot in the array of heart distance, this show clearly embodiments of the present invention to provide the increased density of data storage Ability.
The potentiality stored due to high capacity and high density data, it is contemplated that embodiments of the present invention will be in large data Application is found in the heart.Figure 10 is to show the block diagram for the optical storage array system that can such as use in the data center 1000.The system includes specific implementation multiple devices 500 of the invention.
Particularly, system 1000 includes master computer 1002 and optical storage array (OSA) 1004.OSA itself includes more A unit, each unit include the stack (stack) 1006 of physical medium (that is, disk).Selector 1008 is can be from stack 1006 The mechanical device for obtaining certain desired disk and being installed in driver 500.All multiple disk file units electronics/ It is operated under the control of microprocessor controller 1010.In shown arrangement, a specific multiple driver unit 1012 be used to wrap Media containing even-odd check (parity media), the even-odd check media can be used for detecting and correcting possibly be present at it is any Any error in host storage medium, and thereby, it is ensured that the information stored in OSA integrality.
In order to maximize the performance of OSA 1004, when optimization is for selecting and transmitting the access of disk to/from driver Between.The control algolithm for keeping the access time of each actuator unit synchronous may be implemented in controller 1010.The number of actuator unit Amount can record and read handling capacity according to expected data and increase.
OSA 1004 can be designed as optimizing performance in the following areas: Gao Jilu handling capacity；High storage capacity；Height is read Handling capacity；And data image or duplication.
Record handling capacity is gradually decreased as record document size increases.In order to obtain improvement efficiency, can go first Except big document size data.The data removed can be recorded across N number of identical drivers, increase handling capacity by factor N. Using the driver for being able to record parallel information as shown in Figure 7, the total throughout of OSA 1004 can be TOSA=T × p × N, Wherein, T is for the transfer rate of single position record, and p is the quantity for the parallel position that will be recorded, and N is connected in OSA The quantity of driver.
OSA 1004 can also dramatically increase memory capacity.Total memory capacity depends on the number of high density storage media discs Amount.The total memory capacity of OSA 1004 is COSA=C × Nm× N, wherein C is the memory capacity of single disk, NmIt is held in list The quantity of disk in the stack 1006 of a driver, and N is the quantity of driver.
In the case of reading, selector 1008 can obtain first is addressed disk to read.It is read for data High-throughput can be such that acquisition time minimizes.Once data are read by driver 500, just the buffering into controller 1010 Transmit data in area.The removed data of different physical address of the controller assembling at multiple disks, to restore original document. Accelerate read throughput collecting data to the forward direction buffer area of 1002 transmission of master computer.
In the case where data duplication, instead of sending different removed data to all single drivers, data are sent out Driver selected by being sent to one group, the other disks being also copied at different physical address.Because of not all actuator unit It can be used to carry out the record of the single file with copy simultaneously, so capacity and data throughout reduce.For justifying The total memory capacity of the OSA 1004 of disk mirroring is Cmirror=Cosa/Nmirror, wherein CosaIt is the OSA 1004 of not mirror image Memory capacity, and NmirrorIt is the total quantity of used duplication disk.Handling capacity for disk mirror image is Tmirror= Tosa/Nmirror, wherein TosaIt is the total throughout of not mirror image.
In the above discourse, it has been described that implement various methods, equipment, system and arrangement of the invention.It will Expect, these are provided in the comprehensive understanding of the present invention and its practical realization in various embodiments.It will be understood that this It is not intended to indicate that any concrete restriction to the scope of the present invention a bit, and is only provided by example.The scope of the present invention will join It is determined according to appended claims.

Claims (28)

1. a kind of method of recording optically readable data, the method uses provided recording medium, the recording medium packet Recording layer is included, the recording layer includes that the property of the medium can be induced to become when there is the optical radiation with the first characteristic The optically active material of change, and the recording layer is by the change of properties storing data of the medium, and wherein, institute Stating change of properties can be inhibited by the optical radiation with the second characteristic, which comprises
A region of the recording layer, the first beam optics spoke are irradiated with the first beam optics radiation with first characteristic Penetrate the sufficient intensity in the central part of institute's irradiation area with the optical induction variation for the property for causing the recording medium With enough duration；And
While the region of the recording layer is irradiated with the second beam optics radiation with second characteristic, described second Beam optics radiation has local strength's minimum value in the central part of institute's irradiation area, and in the neighbour of institute's irradiation area There is the office of the optical induction variation for the property for being enough to inhibit the recording medium at least part of the nearly central part Portion's maximum of intensity.
2. according to the method described in claim 1, wherein, first characteristic and second characteristic include different optics frequencies Rate.
3. according to the method described in claim 1, wherein, the first beam optics radiation has gaussian-shape intensity distribution.
4. according to the method described in claim 1, wherein, the second beam optics radiation has annular intensity distribution.
5. according to the method described in claim 1, wherein, the second beam optics radiation is formed to provide in focal regions three-dimensional Hollow intensity distribution.
6. according to the method described in claim 1, wherein, the first beam optics radiation and second beam optics radiation include Multiple parallel beams.
7. according to the method described in claim 6, the described method comprises the following steps: the radiation of application first beam optics and institute The pupil function of the second beam optics radiation is stated to create multifocal array in focal plane.
8. according to the method described in claim 1, the described method includes: arranging and being superimposed the first beam optics radiation and institute The selected polarization state of the second beam optics radiation is stated, to create the predetermined three-dimensional polarization orientation of field in focal regions.
9. a kind of method for optically reading the data of storage in the recording medium, the recording medium includes recording layer, described Recording layer includes that the change of properties of medium corresponding with recorded data is induced in one or more regions Optically active material, and the change of properties storing data that the recording layer passes through the medium, wherein the property becomes The response of the optical radiation with the first characteristic can be detected via the medium by changing, and wherein, the institute of the medium Stating response can be inhibited by the optical radiation with the second characteristic, which comprises
The region of the recording layer, the first beam optics radiation are irradiated with the first beam optics radiation with first characteristic There is the sufficient intensity for causing the response and enough duration in the central part of institute's irradiation area, but do not have and draw Play sufficient intensity and the duration of the optical induction variation of the property of the recording medium；
The region of the recording layer, second beam are irradiated with the second beam optics radiation with second characteristic simultaneously Optical radiation has local strength's minimum value in the central part of institute's irradiation area, and in the neighbouring of institute's irradiation area There is the response for being enough that the medium is inhibited to radiate first beam optics at least part of the central part Local intensity maxima；And
Detect whether the recording layer is presented in the central part of institute's irradiation area to first beam optics radiation The response.
10. the material response of property is broadband optical radiation after instruction variation according to the method described in claim 9, wherein, and And the step of detection includes: the detection dielectric response in first beam optics radiation and second beam optics radiation Application whether emit radiation.
11. a kind of optical data recording and reproduction equipment, the optical data recording and reproduction equipment include:
Bracket, the bracket are configured to medium of holding the record, and the recording medium includes recording layer, and the recording layer can be The change of properties of the medium is induced when in the presence of the optical radiation with the first characteristic and generates the material of property after instruction variation Expect the optically active material of response, and wherein, the response of property can be by having after the change of properties and instruction variation There is the optical radiation of the second characteristic to inhibit；
First light source, the first light source is configured to control, and there is the transmitting of first characteristic to radiate；
First imaging system, first imaging system are configured to the first beam optics radiation for making to emit from the first light source It controllably focuses on a region of the recording layer, wherein the optical radiation is in first beam optics radiation There is maximum intensity in center portion point；
Second light source, the second light source are configured to controllably emit the radiation with second characteristic；
Second imaging system, second imaging system are configured to the second beam optics radiation for making to emit from the second light source It controllably focuses on the region of the recording layer, wherein the optical radiation is radiated in second beam optics There is local strength's minimum value, and at least one of the neighbouring the center portion thereof point in second beam optics radiation in central part There is local intensity maxima in part；And
Controller, the controller are configured at least described first light source of control, first imaging system, second light Source and second imaging system, with the optical radiation of the intensity selected by first emitted from the first light source and use The recording layer being maintained in the bracket is irradiated in the optical radiation of intensity selected by second emitted from the second light source simultaneously Data are selectively recorded the recording layer or selectively read data from the recording layer by selected areas.
12. equipment according to claim 11, wherein first imaging system includes: modulator, and the modulator can Control is selectively to control the irradiation radiated by first beam optics to the recording layer.
13. equipment according to claim 11, wherein the controller is configured at least described first beam optics of control The intensity of radiation between the write operation and read operation of the note recording and reproducing apparatus to be selected.
14. equipment according to claim 11, wherein first imaging system and second imaging system are constructed To generate multiple collimated light beams.
15. equipment according to claim 14, wherein first imaging system and second imaging system include Spatial modulator, the spatial modulator are positioned such that the multiple collimated light beam can be formed selectively.
16. equipment according to claim 11, wherein the material response of property is Reflection Optical Thin Film spoke after instruction variation It penetrates, and the equipment further includes photodetector, the photodetector is configured to by first beam optics radiation and institute It states during the recording layer is irradiated in the radiation of the second beam optics and/or detection later emits the presence of radiation.
17. a kind of optical data memory system, the optical data memory system include:
Multiple optical data recordings according to claim 11 and reproduction equipment；
Multiple record medias, the multiple record media is associated with each optical data recording and reproduction equipment, each record Medium can selectively be loaded onto the bracket of associated optical data recording and reproduction equipment；And
Storage control, the storage control are configured to receive for recording and obtaining the data in the storage system Request, identifies recording medium required by the completion received request in the system, so that required record media quilt It is loaded into each associated optical data recording and reproduction equipment, and makes associated optical data recording and reproduction equipment It completes for completing record required by received request and/or obtaining operation.
18. one kind includes at least one layer of recording medium, wherein described at least one layer of including external protection and recording layer, institute Stating recording layer includes can have change of properties and the generation that the medium is induced when the optical radiation with the first characteristic Indicate the optically active material of the material response of property after changing, and the recording layer passes through the property change of the medium Change storing data, and wherein, the response of property can be by having the second characteristic after the change of properties and instruction variation Optical radiation inhibit.
19. recording medium according to claim 18, the recording medium includes disk.
20. recording medium according to claim 18, wherein the optically active material includes transformation can be by with institute State the first excited state of the optical radiation induction of the first characteristic, and wherein, the change of properties of the recording medium by When being in first excited state, the absorption of the optical radiation with first characteristic causes.
21. recording medium according to claim 20, wherein the optically active material has the property that so that having There is fast transition of the presence induction of the optical radiation of second characteristic from first excited state, to inhibit to be given an account of The change of properties of matter.
22. recording medium according to claim 18, wherein the material response of property is by first after instruction variation Broadband optical radiation caused by decaying of the excited state to ground state.
23. recording medium according to claim 18, wherein the thickness of optically active material layer is enough to allow multiple information Store interior layer.
24. recording medium according to claim 18, the recording medium includes with the detectable tracking being arranged radially The tracking layer of element.
25. recording medium according to claim 24, wherein the tracking element is that magnetic tracks element.
26. recording medium according to claim 24, wherein the tracking element is optical tracking element.
27. recording medium according to claim 24, wherein the tracking element is that metal tracks element.
28. recording medium according to claim 24, wherein the tracking element is that physics tracks element.
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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017059782A1 (en) 2015-10-05 2017-04-13 Shanghai Naguang Information Technology Corporation Media, systems and methods for optical data storage
US20180027494A1 (en) * 2016-07-25 2018-01-25 Intel IP Corporation Apparatus, system and method of neighbor awareness networking (nan) data link (ndl) power save
CN109524029B (en) * 2017-09-20 2020-10-09 上海纳光信息科技有限公司 Multi-layer optical disk storage device and method based on double-beam super-resolution
CN110082897B (en) * 2018-01-25 2020-11-10 中国科学院上海光学精密机械研究所 High-speed imaging device and method
CN108320758B (en) * 2018-02-02 2019-12-20 中国科学院上海光学精密机械研究所 Reversible phase-change material high-density storage device
GB2587809A (en) * 2019-10-01 2021-04-14 Sumitomo Chemical Co Data storage method and composition
JP7403360B2 (en) 2020-03-23 2023-12-22 Ntn株式会社 clutch unit
CN111489768B (en) * 2020-04-01 2021-06-01 华中科技大学 Optical storage method for realizing super-resolution fluorescence intensity multi-order multiplexing
CN114924423A (en) * 2022-05-27 2022-08-19 中国华录集团有限公司 Super-resolution optical storage area array writing optical system and information recording method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5625613A (en) * 1994-02-24 1997-04-29 Matsushita Electric Industrial Co., Ltd. Super-resolution scanning optical system by incoherently superimposing two beams
CN101124629A (en) * 2005-01-27 2008-02-13 原子能委员会 Irreversible optical recording medium comprising a track with low raised zones and method for using same
EP2157575A1 (en) * 2008-08-21 2010-02-24 Thomson Licensing Method and apparatus for reading data from an optical storage medium, and respective optical storage medium
CN103123793A (en) * 2011-11-17 2013-05-29 通用电气公司 Reverse saturable absorbtion sensitizers for optical data storage media and methods for use

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100214046B1 (en) * 1995-03-27 1999-08-02 마츠시타 덴끼 산교 가부시키가이샤 A super-resolution optical head device
JP2001084625A (en) 1999-09-10 2001-03-30 Toshiba Corp Optical information recording/reproducing device
TW472244B (en) 2000-03-10 2002-01-11 Ind Tech Res Inst Tracking error detection method and device of near-field optical read/write system
DE60229444D1 (en) 2002-07-16 2008-11-27 Fujitsu Ltd MULTILAYER OPTICAL RECORDING MEDIUM AND STORAGE
CN100446098C (en) 2002-09-19 2008-12-24 皇家飞利浦电子股份有限公司 Optical scanning device
WO2004032134A2 (en) * 2002-10-07 2004-04-15 Mempile Inc. Tight focusing method and system
GB2451992B (en) 2006-05-16 2011-07-20 Fujitsu Ltd Hologram recording device and hologram recording method
JP2009070475A (en) 2007-09-13 2009-04-02 Hitachi Ltd Optical information recording/reproducing system
JP5007196B2 (en) 2007-10-22 2012-08-22 株式会社日立メディアエレクトロニクス Optical pickup device
JP2009104717A (en) * 2007-10-24 2009-05-14 Pioneer Electronic Corp Recording and reproducing device, and recording and reproducing method
KR20090043883A (en) 2007-10-30 2009-05-07 삼성전자주식회사 Optical pickup and optical information storage medium system
JP2009176388A (en) * 2008-01-28 2009-08-06 Spinet Inc Optical recording and playback apparatus and method, and optical recording medium,
CN102656500B (en) 2009-11-25 2014-08-13 日本电气株式会社 Optical scanning device, optical scanning method, program, and image display device
US10401603B2 (en) 2015-09-21 2019-09-03 The Chinese University Of Hong Kong High-speed binary laser beam shaping and scanning

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5625613A (en) * 1994-02-24 1997-04-29 Matsushita Electric Industrial Co., Ltd. Super-resolution scanning optical system by incoherently superimposing two beams
CN101124629A (en) * 2005-01-27 2008-02-13 原子能委员会 Irreversible optical recording medium comprising a track with low raised zones and method for using same
EP2157575A1 (en) * 2008-08-21 2010-02-24 Thomson Licensing Method and apparatus for reading data from an optical storage medium, and respective optical storage medium
CN103123793A (en) * 2011-11-17 2013-05-29 通用电气公司 Reverse saturable absorbtion sensitizers for optical data storage media and methods for use

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